Easy usage, one switch to control the fan speed.
Chargeable with USB cable charger that is included in the package, and has a detachable cradle that can be used on a table or to carry it around.
Takes up to 4 hours to charge completely. LED light shows red when it is charging and green when it is completed.
Color: black, white, green
Input: 5V, 1A-2.1A
Charging time: 4 hours
Operating time: 8 hours